diff --git a/src/4.advanced_opengl/2.stencil_testing/stencil_testing.cpp b/src/4.advanced_opengl/2.stencil_testing/stencil_testing.cpp
index 26cd2ed..6229d24 100644
--- a/src/4.advanced_opengl/2.stencil_testing/stencil_testing.cpp
+++ b/src/4.advanced_opengl/2.stencil_testing/stencil_testing.cpp
@@ -195,8 +195,8 @@ int main()
         glm::mat4 model;
         glm::mat4 view = camera.GetViewMatrix();
         glm::mat4 projection = glm::perspective(camera.Zoom, (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 100.0f);
-        shader.setMat4("view", view);
-        shader.setMat4("projection", projection);
+        shaderSingleColor.setMat4("view", view);
+        shaderSingleColor.setMat4("projection", projection);
 
         shader.use();
         shader.setMat4("view", view);